Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting

Abstract The speeds of both Arctic surface warming and sea-ice shrinking have accelerated over recent decades. However, the causes of this unprecedented phenomenon remain unclear and are subjects of considerable debate. In this study, we report strong observational evidence, for the first time from...

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Autores principales:	Yunfeng Cao, Shunlin Liang, Xiaona Chen, Tao He, Dongdong Wang, Xiao Cheng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2a34fb4c0a3443bcaa54f675e26095e3
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spelling	oai:doaj.org-article:2a34fb4c0a3443bcaa54f675e26095e32021-12-02T15:05:28ZEnhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting10.1038/s41598-017-08545-22045-2322https://doaj.org/article/2a34fb4c0a3443bcaa54f675e26095e32017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08545-2https://doaj.org/toc/2045-2322Abstract The speeds of both Arctic surface warming and sea-ice shrinking have accelerated over recent decades. However, the causes of this unprecedented phenomenon remain unclear and are subjects of considerable debate. In this study, we report strong observational evidence, for the first time from long-term (1984–2014) spatially complete satellite records, that increased cloudiness and atmospheric water vapor in winter and spring have caused an extraordinary downward longwave radiative flux to the ice surface, which may then amplify the Arctic wintertime ice-surface warming. In addition, we also provide observed evidence that it is quite likely the enhancement of the wintertime greenhouse effect caused by water vapor and cloudiness has advanced the time of onset of ice melting in mid-May through inhibiting sea-ice refreezing in the winter and accelerating the pre-melting process in the spring, and in turn triggered the positive sea-ice albedo feedback process and accelerated the sea ice melting in the summer.Yunfeng CaoShunlin LiangXiaona ChenTao HeDongdong WangXiao ChengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yunfeng Cao Shunlin Liang Xiaona Chen Tao He Dongdong Wang Xiao Cheng Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting
description	Abstract The speeds of both Arctic surface warming and sea-ice shrinking have accelerated over recent decades. However, the causes of this unprecedented phenomenon remain unclear and are subjects of considerable debate. In this study, we report strong observational evidence, for the first time from long-term (1984–2014) spatially complete satellite records, that increased cloudiness and atmospheric water vapor in winter and spring have caused an extraordinary downward longwave radiative flux to the ice surface, which may then amplify the Arctic wintertime ice-surface warming. In addition, we also provide observed evidence that it is quite likely the enhancement of the wintertime greenhouse effect caused by water vapor and cloudiness has advanced the time of onset of ice melting in mid-May through inhibiting sea-ice refreezing in the winter and accelerating the pre-melting process in the spring, and in turn triggered the positive sea-ice albedo feedback process and accelerated the sea ice melting in the summer.
format	article
author	Yunfeng Cao Shunlin Liang Xiaona Chen Tao He Dongdong Wang Xiao Cheng
author_facet	Yunfeng Cao Shunlin Liang Xiaona Chen Tao He Dongdong Wang Xiao Cheng
author_sort	Yunfeng Cao
title	Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting
title_short	Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting
title_full	Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting
title_fullStr	Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting
title_full_unstemmed	Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting
title_sort	enhanced wintertime greenhouse effect reinforcing arctic amplification and initial sea-ice melting
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2a34fb4c0a3443bcaa54f675e26095e3
work_keys_str_mv	AT yunfengcao enhancedwintertimegreenhouseeffectreinforcingarcticamplificationandinitialseaicemelting AT shunlinliang enhancedwintertimegreenhouseeffectreinforcingarcticamplificationandinitialseaicemelting AT xiaonachen enhancedwintertimegreenhouseeffectreinforcingarcticamplificationandinitialseaicemelting AT taohe enhancedwintertimegreenhouseeffectreinforcingarcticamplificationandinitialseaicemelting AT dongdongwang enhancedwintertimegreenhouseeffectreinforcingarcticamplificationandinitialseaicemelting AT xiaocheng enhancedwintertimegreenhouseeffectreinforcingarcticamplificationandinitialseaicemelting
_version_	1718388819093356544

Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting

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